M7009——2,6-bis(trimethyltin)-(4,8-bis(5-(octylthio)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene)

M7178——3,9-bis(trimethylstannane)-5,5,11,11-tetrakis(5-(2-ethylhexyl)-thiophen-2-yl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]- dithiophene